The fly-killing lamp attracts mosquitoes, flies, moths and other flying insects by the light wave of the lamp tube. If the lamp tube is not replaced for a long time, the light wave of the lamp tube will weaken to a certain extent, and this fly-killing lamp will be useless.

The lamp tubes of fly-killing lamps need to be replaced at different times according to their quality. Generally, domestic lamps need to be replaced at most once every two months. Imported lamps with better quality can last for one year, and imported long-lasting lamps can last for two years.

what is the specific basis? It is to measure the wavelength value of the lamp with UVA meter, and decide whether to replace it according to this value.